← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 50 · 40 questions
TalentJR

The fast method (Build from 10%): 10%: divide by 10. 1%: divide by 100. 5% = half of 10%, 20% = double 10%, 15% = 10% + 5%. 50% = half, 25% = half of a half.

NameDateTime takenScore ___ / 40
  1. 1.20% of 640 =
  2. 2.15% of 580 =
  3. 3.5% of 460 =
  4. 4.1% of 450 =
  5. 5.15% of 90 =
  6. 6.10% of 70 =
  7. 7.5% of 210 =
  8. 8.20% of 20 =
  9. 9.50% of 340 =
  10. 10.20% of 190 =
  11. 11.5% of 420 =
  12. 12.10% of 220 =
  13. 13.15% of 200 =
  14. 14.5% of 200 =
  15. 15.1% of 720 =
  16. 16.15% of 610 =
  17. 17.20% of 660 =
  18. 18.25% of 460 =
  19. 19.15% of 30 =
  20. 20.15% of 220 =
  21. 21.20% of 60 =
  22. 22.10% of 740 =
  23. 23.10% of 500 =
  24. 24.20% of 410 =
  25. 25.50% of 470 =
  26. 26.20% of 880 =
  27. 27.15% of 650 =
  28. 28.25% of 200 =
  29. 29.15% of 770 =
  30. 30.15% of 180 =
  31. 31.10% of 750 =
  32. 32.20% of 430 =
  33. 33.20% of 460 =
  34. 34.20% of 280 =
  35. 35.5% of 30 =
  36. 36.20% of 300 =
  37. 37.5% of 770 =
  38. 38.15% of 520 =
  39. 39.10% of 340 =
  40. 40.15% of 570 =

Answer key

  1. 128
  2. 87
  3. 23
  4. 4.5
  5. 13.5
  6. 7
  7. 10.5
  8. 4
  9. 170
  10. 38
  11. 21
  12. 22
  13. 30
  14. 10
  15. 7.2
  16. 91.5
  17. 132
  18. 115
  19. 4.5
  20. 33
  21. 12
  22. 74
  23. 50
  24. 82
  25. 235
  26. 176
  27. 97.5
  28. 50
  29. 115.5
  30. 27
  31. 75
  32. 86
  33. 92
  34. 56
  35. 1.5
  36. 60
  37. 38.5
  38. 78
  39. 34
  40. 85.5

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths